Power On Reset

Stand By

Command

entering

period

+

Blank period

Rising edge at CTRL

Run Mode

Follow Mode

Run Once Mode

Training Mode

CTRL = LOW

CTRL = LOW

Run Once

Command,

CTRL = High,

Mode = 1

Training

Start

Command

Run Command

or Run Once

Command,

Mode = 0

Run

Command,

Mode = 1

CTRL = LOW

Training end

or timeout

Wait for CTRL

Run Once

Command,

CTRL = low,

CTRL = High

Mode = 1

CTRL = High

Mode = 0

17

LP5560

www.ti.com

SNVS873D – AUGUST 2012 – REVISED JUNE 2016

Product Folder Links: LP5560

Submit Documentation Feedback

Copyright © 2012–2016, Texas Instruments Incorporated

7.4 Device Functional Modes

POWER-ON RESET When input voltage is applied to VDD pin device goes through power on reset (POR).

During POR defaults are set into control registers.

STANDBY: After POR device goes to standby. This is the low power mode when all the internal blocks are shut

down.

COMMAND ENTERING PERIOD + BLANK PERIOD: Rising edge of the CTRL signal activates the circuit and

starts a command entering period. During the command entering period all rising edges are

counted. After command entering period there is a blank period when no rising edges are allowed.

RUN:

If mode bit is 1 (run mode) and run command has been detected device goes into run mode. In run

mode LP5560 generates the programmed blinking sequence.

FOLLOW MODE: If mode bit is 0 (follow mode) and run command or run once command has been detected

LP5560 goes into follow mode. In follow mode LED stays on as long as CTRL pin is held high.

RUN-ONCE MODE: If run once command has been detected and mode bit is 1 (run mode) device goes into

run-once mode. In run-once mode LP5560 generates the programmed blinking sequence once.

CTRL must be high as long as blinking sequence is running.

TRAINING: If training start command has been detected device goes into training mode. In training mode a

new blinking sequence can be programmed into the device.